diff --git a/tools/fv_diagnostics.F90 b/tools/fv_diagnostics.F90
index 66266271b..88bba0f29 100644
--- a/tools/fv_diagnostics.F90
+++ b/tools/fv_diagnostics.F90
@@ -27,7 +27,7 @@ module fv_diagnostics_mod
  use constants_mod,      only: grav, rdgas, rvgas, pi=>pi_8, radius, kappa, WTMAIR, WTMCO2, &
                                omega, hlv, cp_air, cp_vapor, TFREEZE
  use fms_mod,            only: write_version_number
- use fms_io_mod,         only: set_domain, nullify_domain, write_version_number
+ use fms_io_mod,         only: set_domain, nullify_domain
  use time_manager_mod,   only: time_type, get_date, get_time
  use mpp_domains_mod,    only: domain2d, mpp_update_domains, DGRID_NE, NORTH, EAST
  use diag_manager_mod,   only: diag_axis_init, register_diag_field, &